[Bug 97978] [SKL] guc submission is causing IGT tests timeout (igt/gem_ringfill)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97978

--- Comment #8 from Michel Thierry <michel.thierry at intel.com> ---
If you have time, can you run this experiment?

1. grub parameters:
i915.enable_guc_loading=2 i915.enable_guc_submission=2 i915.guc_log_level=2
drm.debug=0xe

2. run these tests (stop if one of the tests already timeout):
gem_ringfill --run-subtest basic-default
gem_ringfill --run-subtest basic-default-interruptible
gem_ringfill --run-subtest basic-default-hang
gem_ringfill --run-subtest basic-default-forked

3. get these logs:
dmesg
cat /sys/kernel/debug/dri/0/i915_guc_log_dump > ~/guc_log_dump.log
cat /sys/kernel/debug/dri/0/i915_guc_info > ~/timeout_info.log
cat /sys/kernel/debug/dri/0/i915_gem_seqno >> ~/timeout_info.log
cat /sys/kernel/debug/dri/0/i915_gem_request >> ~/timeout_info.log

And attach those 3 files (dmesg, guc_log & timeout_info). 

Thanks

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